Thrombotic microangiopathy (TMA) is a life-threatening clinical syndrome characterized by hemolytic anemia, thrombocytopenia, and microvascular thrombosis, resulting in ischemia and organ damage. Multiple myeloma (MM) is a neoplasm arising from clonal plasma cells within the bone marrow. The treatment frequently includes multi-agent immunochemotherapy, often with the use of proteasome inhibitors (PIs) such as bortezomib, carfilzomib, or ixazomib. There are increasing reports of TMA in association with PI exposure. This review summarizes the epidemiology, pathogenesis, and diagnosis of PI-related drug-induced TMA. We will outline the definition and diagnosis of TMA and explore an important cause of hemolysis in patients with MM drug-induced TMA after PI exposure, an increasingly recognized therapeutic complication. This will be emphasized through the description of 3 novel cases of TMA. These illustrative cases occurred after treatment with high-dose weekly carfilzomib, cyclophosphamide, and dexamethasone as part of the MCRN003/MYX1 phase II clinical trial (NCT02597062) in relapsed MM.Infertility is a growing worldwide public health problem, and stress is a main factor exerting detrimental effects on female reproduction. However, knowledge regarding the neuroendocrine changes caused by chronic stress in females is limited. Therefore, this study assessed the effects of stress on hormones that control female reproduction during the proestrus and diestrus stages of the estrous cycle, as well as its effects on fertility. Adult females were assigned to either a control or a stress group. Stress consisted of exposure, for 15 min, to cold-water immersion daily for 30 days. Estrous cyclicity, female sexual behavior, as well as hypothalamic kisspeptin, gonadotropin releasing hormone (GnRH) content, serum luteinizing hormone (LH), estradiol (E2), progesterone (P4), corticosterone (CORT) and fertility were assessed after chronic stress. The results show that chronically stressed females exhibited disrupted estrous cyclicity, decreased receptivity, low pregnancy rates and lower numbers of fetuses. The content of Kisspeptin and GnRH in the Anteroventral Periventricular/medial Preoptic Area decreased during proestrus, while Kisspeptin increased in the Arcuate nucleus in proestrus and diestrus. Serum LH decreased only during proestrus, whereas E2 and P4 concentrations decreased during proestrus and diestrus, with a concomitant increase in CORT levels in both stages. As a whole, these results indicate that chronic stress decreases Kisspeptin content in AVPV nucleus and GnRH in POA in females, and might induce disruption of the LH surge, consequently disrupting estrous cyclicity and fertility, leading to lower rates of pregnancy and number of fetuses.There are no established criteria in selecting pleural effusion (PE) specimens for flow cytometric analysis (FCA). FCA on effusion specimens may be ordered by a clinician or a cytopathologist. In an effort to improve lab test utilization, this retrospective study aims to identify characteristics of PE specimens on which the addition of FCA has high diagnostic yield.
We identified consecutive cases of PE cytology specimens on which FCA was performed over a 5-year period (2014-2019). Patient demographic data and history, FCA diagnosis, cytologic diagnosis, cellular quantity and composition, and peripheral blood cell counts were collected. Chi-square, Mann-Whitney U, and t tests were used when appropriate with a significance level of P &lt; 0.05.
We identified 164 FCA cases corresponding to 142 patients (age 19-90 years; malefemale 21). https://www.selleckchem.com/products/Benserazide-hydrochloride(Serazide).html The majority of cases had no abnormality by cytologic examination, whereas others were obviously malignant due to non-hematologic malignancy. Most (119 of 164, 73%) had negative immunophenotypic studies by FCA. Forty-five of 164 (27%) FCA cases were positive for a monoclonal myeloid or lymphoid population. Clinicopathologic features associated with positive FCA results included a history of hematologic malignancy, peripheral blood lymphocytes of ?20%, the presence of a monomorphic lymphoid population, large atypical cells, and mitoses.
This study identifies features that are associated with positive FCA in PE cytology specimens. Using these features by cytopathologists to order FCA on PE specimens as a reflex test would significantly reduce unnecessary testing and improve FCA utilization.
This study identifies features that are associated with positive FCA in PE cytology specimens. Using these features by cytopathologists to order FCA on PE specimens as a reflex test would significantly reduce unnecessary testing and improve FCA utilization.The aim of this study was to evaluate the effectiveness of diffusion-weighted imaging (DWI) in predicting cervical lymph node metastasis in head and neck malignancies.
Of the 67 patients with head and neck malignancies included in the study, 36 patients (the DWI group) underwent DWI examination with magnetic resonance imaging (MRI) of the cervical lymph nodes, and 31 patients (the conventional MRI group) underwent MRI only. Radiologists classified the lymph nodes as "metastatic" or "benign" in the DWI group by using MRI features and the apparent diffusion coefficients (ADCs) calculated from DWI, and in the conventional MRI group with MRI only. Histopathologic diagnosis of the nodes was the gold standard.
The average ADC value of metastatic lymph nodes was significantly lower than that of benign lymph nodes (P=.020). An optimal threshold ADC value effectively distinguished the ADCs of metastatic versus benign lymph nodes (P=.003). Diagnostic performance was significantly better in the DWI group (P=.044), with significantly higher values for sensitivity, positive predictive value, and area under the receiver operating characteristic curve (P ? .039).
ADC is effective in distinguishing metastatic lymph nodes from benign lymph nodes. The addition of ADC values to the morphologic evaluation of MRI results in significantly better diagnostic outcomes compared with evaluation of MRI alone.
ADC is effective in distinguishing metastatic lymph nodes from benign lymph nodes. The addition of ADC values to the morphologic evaluation of MRI results in significantly better diagnostic outcomes compared with evaluation of MRI alone.